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Oxygen Species Regulating Carbon Monoxide Oxidation with Multi-Reaction Pathways over a Silver Catalyst
https://kitami-it.repo.nii.ac.jp/records/6668
https://kitami-it.repo.nii.ac.jp/records/66689cd3f506-83b5-4fb7-842c-18ceb97fa69d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
22-2-2.pdf (4.9 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2007-04-09 | |||||
| タイトル | ||||||
| タイトル | Oxygen Species Regulating Carbon Monoxide Oxidation with Multi-Reaction Pathways over a Silver Catalyst | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| 著者 |
Tohru, KANNO
× Tohru, KANNO× Masaki, HAKOZAKI× Masayoshi, KOBAYASHI |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The reaction route of CO oxidation by nitrous oxide and oxygen over a silver catalyst has been studied from the analysis of their transient behavior at 20℃. Half of the total surface sites are active for the adsorption of oxygen and one third of them are active for the decomposition, of N_2O, indicating the heterogeneity of the silver surface. At a reaction steady state of CO oxidation in the N_2O-CO relation and the O_2-CO systems, the surface in the N_2O-CO reaction is in a more reduced state than that in the O_2-CO reaction. The activation energy is evaluated to be 14kcal/mol for the O_2-CO reaction and 10kcal/mol for the N_2O-CO reaction, suggesting a different rate controlling step between both reactions. The adsorbed oxygen (presuming diatomic oxygen) from gaseous oxygen, not from N_2O, is responsible for the oxidation of CO. In a Eley-Rideal type mechanism, the rate of CO oxidation with diatomic oxygen is estimated to be about fourteen times faster than that of N_2O decomposition. The graphical analysis of transient response curves obtained in the two reactions leads us to a conclusion that the formation rate of the diatomic oxygen species is a sort of rate-controlling step in the N_2O-CO reaction. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 北見工業大学研究報告 巻 22, 号 2, p. 255-266, 発行日 1991-03 |
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| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 著者版フラグ | ||||||
| 言語 | en | |||||
| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | 北見工業大学 | |||||
| 言語 | ja | |||||
